There's an inverse relationship between money spent on a trail building project and the quality of the finished product:
2013 Bell Built Grants: Copper Harbor, Michigan from IMBA on Vimeo.
When I hear some trail group has a bunch of money to spend on trails, I wince. That's like a death sentence for good trail building. This same principle also applies to MTB movie budgets:
Bell is partnering with IMBA trail solutions to do another grant, only this time it's for a double black diamond trail. When they proposed to do a downhill trail a couple years back their three finalists included Follow the Leader at Sandy Ridge, one of the worst, flattest trails ever, and the final winner would ultimately become the Yellow Brick Road featured in the video above. See if you can spot the difference between the next two trails:
SPOILER ALERT: the difference is that the bottom trail is yellow.
I don't think the cobbles in Paris-Roubaix are as smooth as the IMBA downhill trail in Copper Harbor, Michigan.